Ductwork



FIG. 1 is a front perspective view of a ductwork, showing my new designat a smaller scale than that of the remaining FIG. views;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevationview being a mirror thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of theductwork that form no part of the claimed design.

CLAIM The ornamental design for a ductwork, as shown and described.